Selective controlling apparatus.



P. R. MCBERTY. SELEGTIVE GONTROLLING APPARATUS. APPLICATION FILED SH12,1909,

1,127,466. Patented Feb.9, 1915.

.'10 r V -aiiism for automatic selectors .of a telephone miran entrasParana* orriioii.-

FRELNK R. MCBERTY, OF NEVI" RQCHELLE, NEW YORK, .ASSGNGR TO WESTERNELECTRIC COMPANY, 0F NEW YORK, N. Y., J9. COBPORATON OF ILLINOIS.

memes.

egalitarian sied september e, isos. semi no. 515,933.

[citizenot' the United Sta-tes, residing at New Rochelle` in the countyof Westchester and .State of New -York, have invented a certain new anduseful lmprovement fin-Selective Controlling Apparatus, of which vthefollowing is in full, clear, concise, and exact de' Ascription. y l AVThis invention relates to controlling mecheXcha-nge system. Its objectis to provide an improved arrangement of apparatus for controlling theadvance movement Vand stoppingof selectors, and more` particularly itsobject is to provide a simple and effective device. for, predeterniiningand counting the number of current impulses to be transn mitted in theselector controlling circuit, to'

the end thatv the impulse sending operation -Will take place With greatrapidity and the desired eirtent of travel of the selector Wil beaccurately determined. 'f

Hei'etofore, according to aV well known method ofcontrolling.selectorslin telephone exchange systems, there have beenemployed a numberl of keys or .switches and certain forms of rotary.multiple contact switches or i senders the keys and senders forming thecontrolling apparatus for the selector, and

' each key being adapted to close a local circuit at one point which issubsequently closed at. another point by the sender. The

sender and the selector are operated in unison and are advanced underthe control of the current impulses until the local circuit referred kto'is closed, whereupon an electro- -i-'esponsive device, the Winding ofwhich is included in thelocal circuit, is operated to open thecontrolling circuit,or 1n some other way to stop the advance movement ofthe selector.

According to this invention the selector controlling mechanism comprisesa series of l successively operable electrical devices and a series ofkeys arranged to select for effective operation a variable group of theelectrical ydevices together with a device'adapted to respond upon theoperation of the last operated electrical device in the selected group.

More in detail the invention comprises al series of elcctromagnets.unich are prefer-` ably relays and which are caused to operate,Lsuccessively in response to current impulses :from aninterrupter, and aseries of keys or SELECTIVE CONTROLLN APPARATUS.

rammed renfe, 1915.

the forni of a stepping relay, the switch contacts of which alternatelymake and break a contact in the circuit vof the relays. The responsivedevice" is employed as the means of 'stopping the iiiovenient oftheselectorgit' maybe in the form of an ordinary cutoff relay and itsWinding may be in`- eluded in a local circuit having a plurality olinormally open branch circuits, each of which is adapted to be closed bycontacts in series of any counting relay and thecorren sponding switch.A second seriesof relays is 'preferably employed in conjunctionfwitb.the series first mentioned and the tvvo series otrelays are associatedwith two local circuits respectively.l These local circuits are arrangedto be closed alternately by the stepping'relay, the Winding of which isincluded in a main controlling circuit ivliich circuit is provided withsome suitable form'o'f con tact making device or. interrupter, operatingin unison with or in the' movement of the selector; The relays in thetwo series vWhich are operated in alternate succession 'are selflocking.The cut-off relay stops the movement of the selector preferably byopening drawing, in which 1 is a main controlling circuit including tlieWinding of a stepping relay or interrupter 2 and a contact 3 normallyclosed but adapted to be opened-by a cut-oft' relay 4i. Relay 2 isadapted uto alternately close and interrupt tivo local circuits 5, 6,through itsv front and back contacts 7, 8, respectively. A battery 9connected. to the switch spring of the relay isv adapted to supplycurrent to both local circuits. A series of relays l0, il, 12 and 13 isassociated with local circuit 6 and a second series of relays 10211, 12aand 13"* is associated with local circuit 5., Agthird local circuit 20is associated with allot` the relays of the two series and its function,as will appearv presy.

being irst operated in local circuits y5 or 6.

This local circuit 2O may include as shown a,

source'of current 21 and a switch- 22.

winding of the cut-E relayA 4 is included in a circuit V23 havingbranches 24, 25, 2'6-A and 27.'. .A- series of keys 30, 31, 32 and arevprovided, each being adapted to close a con-v tact in one of thebranches of 'ciroult 23. lncluded in these branchesare also,- a. seriesof switch contacts 40, 41, 42 ,and 4,3v con-j trolled by'relays 10, l1,12 and 13, respectively.

Anv suitable form of interrupter may be provided in the main controllingcircuit 1.

In the drawing there is shown a contact device V 50 coperating with astarwheel 51 which isrotated in the advance movement of a cbntrolledautomatic selector 52. This selector may be employed to perform any`-desired 'function in the telephone exchange system, -such as theselection of a connection 'b'etween telephone lines. The advancemovement may he secured by an electromag- "netic 'clutch comprising'aconstantly .rotat- -fing power shaft 54, cooperating disks 55 .'and 56and an electromagnet 57. The circuits.

'cuit of the electromagnet may be controlled in a local circuit byarelay 58 whose winding is in lthel main controlling circuit.

battery 59may supply current to both cir- Upon the closing of thecircuit of `jthe clutch magnet 57 the rot'atingdisk 5,5 engages thenormally stationary disk 56 'which drives 'the starwheel 51. Contact 50is thus caused periodically to close and open -a shunt path about thestepping relay 2 1n ,the main controlling circuit 1. This circuit 'isadapted to be closed initially by contacts ing operation.

ed from relay 2,

' controlling -advance movement. The rotation of the starwheel 51 causesthe current to be shuntbut not from relay 58, once for each step.

circuit 1 relay .2 operates to close local circuit 5 at contact 7 whichcirlay 10a only.

cuit normally includes the winding of re- This relay is energized, andbecomes locked in local circuit 20 and removed from local circuit 5 bythe operation of its switch spring 60. Relay 10 Aalso Vbrings relay 10into connection with local circuit 6 by vthe operation of its switchspring 70. Upon the first closing of contact 50, contact 8 of relay 2 isclosed andrelay 10 becomes energized. This relay in turn becomes lockedin local circuit 20 and removed from local circuit 6 by the operation ofits switch spring 80. Relay 10 also connects relay 11a in local circuit5 by the steps.

Upon the irst closing ofy lays,

operation of its *switch spring 90. In a similar manner the 'relay 11aAis operated upon the second closure of local circuit 5 and relay 11 u onthe second closure of local circuit 6. elays 12'? and 12 are in thesamel way operated in succession upon the third closing of localcircuits 5 and'6, re-

spectively. Finally the energization of relay 12 causes the closing ofbranch4 26 at lcontact 42, key 32 having already been depressed. Localcircuit 23 is now completed and the cut-offrelay 4 operates tovinterrupt the main controlling circuit at contacty 3, .thereby takingaway current from relay 58. The' clutch magnet -is denergizedv and theselector stops after having taken three full Relays 10a, 1o, 11B., 11,12a andjla are now locked up in local circuit 20. They may besubsequently released by opening that circuit at switch 22. The 'Wholeoperation may be repeated with any one of the keys depressed.

The series ofrelays and keys may be extended toany desired extent bycontinuing .the circuit arrangement as shown to other relays and keys.What I claim is: I

1. The combination with a selector and its controlling circuit, ofselector controlling mechanism comprising anl interrupter, a circuitcontrolled thereby, a series of electromagnets, means under the controlof said interrupter for bringing said'electronagnets successlvely intooperative relation to said circuit, a series of keys one for eachelectromagnet, and a responsive device controlled by the conjointoperation of anyone of said electroma ets and the corresponding key foreffecting a change in said controlling circuit of the selector.v

2. The combination with a selector and its controlling circuit, rofselector controlling mechanism, comprising' an interrupter, a circuit'controlled thereby, a series of'relays, 'means under the control ofsaid interrupter for bringing said relays successively `into o erativerelation to said circuit, a seriesho switches one' for each relay, anelectro-responsive device for effecting a change in said controllingcircuit of Vthe selector and a circuit fr said electro-responsivedevicehaving a'plurality of branches each including normally opencontacts in series of one of said relays switch.

3. The combination with a selector and its controlling circuit, 'ofselector controlling mechanism comprising an interrupter,

two circuits adapted to be closed alternately by said interrupter, aseries of self-locking and the corresponding relays associated with oneof said circuits,

a series of switches one for each of sai'd rea second series ofself-locking relays'-` associated with the other ofsaid circuits, therelays of the two circuits being ar- Liam-acc l ranged tobe operated inalternate successionin .responseto current impulses in said circuits anda responsive devicejcontrolled change in said controlling circuit ottheselector.

v4L. Selector controlling mechanism coniprising a stepping-relay.,circuit therefor' having an 'interruptezg tivo, lo'cal circuits adapted'to` be closed alternately by said relay, a. series of relays associatedwith one of .said local circuits, a-series of svgitches one .foreach ofsaid relays,- afseries of relays associated with the other .of saidcircuits,

`the relays iny thetwo local .circuits being arranged to bel operated inalternate succession in.response to current vimpulses'in said vlocalvcircuits and a cutsotfrelay responding tothe conjoint operation. of any'c one of said switches and the lcorresponding relay and adapted to openthe circuit of said Vas stepping relay.

5; The combination `with a selector, its

Vcontrolling circuit and an interrupter operating periodically in unisonwith the selector, V.of a circuit controlled by said interrupter, aiseries of relays, means under the control ofthe interrupter forbringingsaid relays successively into 'operative relation v.tof saidcircuit, a series of switches one forv each relay, andra deviceresponding to the conjoint operation of any one of said relays andthecorresponding switch and "adaptedA to change the controlling circuit ofthe selector. 1, c

fl 6. The combination with a selector and a controlling circuittherefor, of an inter- :rupter' operating in unison with the'selecp-tor, a stepping relay responding to current lchanges controlledby said .interrupter, tivo local circuits adapted. to be changedalternatelyfby said stepping relay, a series of electromagnets, meansassociated with one of said local circuit-s for 'bringing saidelectromagnets successively into operative relation to the 4other 'ofsaid local circuits, a series of'lreys one for each electromagnet and aresponsive device `vcontrolled conjointly. by any one of saidelectromagnets and the corresponding key and adapted to change thecontrolling circuit ofv the' Se-.

lector. l ,y

7. The combination with a selector and its controlling circuit, of arelay vincluded in said circuit, an interrupterfoperating in themovement of the selector and vadapted to intermittently shunt saidrelay, tivo local `circuits adapted to be changed alternatelytromagnetsand'ineans for operating them 1n succession',of a responsive'device controlled by said electromagnets and a series of keysrespectively associated with said electrical dev-icesand arranged toselect for ettectiye operation a variable group of said electromagnets,said responsive device lbe-l ing directly responsive to the operation ofthe last operated electrical devicer in any selected group. 'ff' 9. Thecombination withQ a plurality of relays and means for operating theminsuccession, of =a "device `adapted to respond upon the completeoperation 'of a variable group of said relays and a series of selectivekeys respectively Aassociated with said l:relays and adapted to`renderinetfective the relays external Ato 'said variable group.

10. The .combination with a series of relays, a circuit therefor and an`interrupter in said circuit, said relays being operated successively ina deni'te'order in response to' successive impulses of4 currentv in saidc1rcuit`,"`ot a local circuit, controlled by said relays, a sei-ies ofswitches adaptedto select for effective operation a variable group of`switches being arranged" to select 'the relays comprising said variablegroup, and a responsiye'device in said circuit.

12. The combination with a seriesfctrclays, a controllingcircuitthereforand an interrupter adapted 'tovtransmit impulses insaid'circuit,l said` relays beingyarrangedto operate in'succession invresponse to saidimpulses, of'a local circuit controlled by said relays,'a series of syvitches one for eachre.- lay, said local circuit'beingadaptcd to be changed upon .the operation o fa -lvariable 'group'of said relays andi-'said switches bcing Vzuranged to'select therelays-"compris ing said yariablegroup, and a responsive device in saidlocal circuit. said responsive device being adapted to change thecondition of said cont-rolling circuit.

1 3. The combination with a selector, an interrupter operating in themovement thereof, anda circuit including said inter-A rupter, of aSeries of electrical devices iop ilo'

'adapted to operate in successioni-n response to impulses of current insaid circuit, 'a device directly responsive'to the operation of the lastof a variable group ofsaid electrical devices for controlling saidinterrupter circuit anda series of selective keys adapt-ed y devicedirectly' responsive to the conjoint operation ofany one of saidelectromagnets and the corresponding key. 15. The' combination with aninterrupter, of a series of relays, means whereby said relays aresuccessively operated by impulses from said interrupter, a series ofkeys onev Afor each relay, a relay for interrupting the v.operation ofthe relays of said series and .I 'through -each counting relay,

an operating circuit therefor extending avkey and the correspondingrelay. 1.6. The combination with an interrupter, of a seriesof'electromagnets, means wherebyA said electromagnets are adapted to beVsuccessively operated by currentfimpulses from said interrupter,aseries of keys one for each electromagnet, and a device respon= sive tothe conjoint operation of any one of said electromagnets and thecorresponding key and'adapted to'stop the sending ofV current impulses.

' 17. The' combination with a stepping re- 'lay and a controllingcircuit therefor, of a series of counting relays, means whereby saidrelays afgrjei adapted to be successively 'operated by current impulsescontrolled by said stepping relay, a series of keys one for a cut-offrelay, anda circuit therefor havingbranches,

controlling including normally open coneach branch vtacts in series ofone of said counting relays and the corresponding key, and said cut-0Erelay being adapted to open the -controlling circuit ofsaid steppingrelay.

' 18. The combination with ay main con- `-trolling circuit, means' forransmitting lays associated .55

current'impulses therein/and a relay included in said circuit, of twolocal circuits, said relay being adapted to alternately effectv changesin said circuits, a series of rewith one of said local circuits, aseries of switches one foreach relay of said series. asecond series oflrelays associated with the other local circuit, the

relays in the two series being'adapted to rekeys one spend in alternatesuccession to current imtrolling circuit, -an interrupter for transmit'ting current impulses therein and a stepping relay included in saidcircuit, of two local circuits, said relay being adaptedto.

alternately close and open said local cir-- cuits, a series of countingrelays associated with one of said local circuits, a series of for eachcounting relay, a series of relays associated with -the other localcircuit, the relays in the two series being adapted to respond inalternate succession upon the closing of said local circuits by saidstepping relay, a locking circuit adapted to maintain said relays of thetwo series energized, a cut-oif relay and a controlling cir-v cuittherefor having branches, leach branch including normally open contactsin series of one of said counting relays and the corresponding key, saidcut-of relay being adapted to open said main controlling lcircuit.

20. The combination with a series of relays and means for operating themsuccessively in a definite order, of a series of keys arranged to selectfor effective operations a variable group of said relays; and anelectrically operated device directly responsive to the operation of thelast operated relay in the selected group.

'21. A selective switching apparatus comprising a set of self-lockingrelays, a locking wire therefor, wire, a controlling relay having awinding continuously connected thereto, front and back contacts onl saidcontrolling relay, means for connecting said contacts to alternaterelays of said set, each connection' pass-l ing through contacts on thepreceding relay, whereby step by step selection is attained by.successive energization of alternate relays bv the makes and breaksproduced bythe impulse transmitting wire.

In witness whereof, I hereunto subscribe my name this first day ofSeptemberv A. D. 1909..

4AFRAUN'K R. MGBERTY.

Y lllitnesses:v IRviNc MACDONALD, EDGAR F. BEAUBIEN.

conjoint operation of any an impulse transmittingv

